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Kassiani Panagiotou

@kassipan.bsky.social

PhD candidate @Ettema lab | Laboratory of Microbiology (WUR)

9 Posts116 Follower130 Folgt
Andrew Roger@andrewjroger.bsky.social · 2mo ago

1/ Our new paper in Systematic Biology "Modeling Site-and-Branch-Heterogeneity with GFmix" led by @cgpmcc.bsky.social describes improved ways to model compositional heterogeneity across both sites and branches—an important source of error in deep phylogenomics. doi.org/10.1093/sysb...

Modeling Site-and-Branch-Heterogeneity with GFmix

Abstract. Phylogenetic trees are often inferred from protein sequences sampled from diverse taxa across the tree of life. The compositions of these amino a

doi.org

Stephan Köstlbacher@stephkoe.bsky.social · 5mo ago

🧵 1/10 New paper out in @natmicrobiol.nature.com from my postdoc at @mib-wur.bsky.social! 🎉 How eukaryote-like was the archaeal ancestor of eukaryotes? Sequence searches alone can't tell us — so we used protein structure prediction to look deeper. 🧬 www.nature.com/articles/s41...

Prediction of eukaryotic cellular complexity in Asgard archaea using structural modelling - Nature Microbiology

A structural catalogue of the Asgard archaeal pangenome reveals hundreds of eukaryotic-like proteins that suggest a higher degree of cellular complexity in the archaeal ancestor of eukaryotes.

nature.com

Kassiani Panagiotou@kassipan.bsky.social · 5mo ago

Just over ten years after the discovery of the first Asgard archaeal genomes, we revisit the rapid expansion of this remarkable archaeal lineage. From diverse genomes and metabolisms to eukaryotic signature proteins and the first cultured representatives. www.nature.com/articles/s41...

Diversity, ecology, cell biology and evolution of the Asgard archaea - Nature Reviews Microbiology

The Asgard archaea have become a cornerstone of archaeal research, particularly for studies aiming to unravel the origin and early evolution of eukaryotes. This Review outlines the current state of th...

nature.com

Thijs J. G. Ettema 🦠🔬🇳🇱🇸🇪🇪🇺@ettema.bsky.social · 6mo ago

Today we published a Correction on our 2023 @nature.com paper reporting the heimdallarchaeial ancestry of eukaryotes: www.nature.com/articles/s41... Corrected paper: www.nature.com/articles/s41... Importantly, the re-analyses of the corrected dataset are consistent with the original findings.

Author Correction: Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes - Nature

Nature - Author Correction: Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes

nature.com

Daniel Tamarit@danieltamarit.bsky.social · 10mo ago

Exultant to have been awarded a Vidi grant by the Dutch Research Council (NWO)! Can't wait to get started! Stay tuned for two upcoming (PhD student & postdoc) positions to study archaeal genome evolution. Also huge congrats to my colleague @dorotakawa.bsky.social! www.uu.nl/en/news/21-v...

21 Vidi grants awarded to Utrecht-based researchers

21 researchers from Utrecht University, University Medical Center Utrecht, and Princess Máxima Center have each been awarded a Vidi grant worth up to €850,000.

uu.nl

Wen-Cong Huang@wentsunghwang.bsky.social · 12mo ago

academic.oup.com/mbe/advance-... Happy to share this one. We investigated the #phylogenetic placement and #genome_evolution of Pangui/Njordarchaea-unique #Asgardarchaea that might have undergone genome reduction...

Phylogenomic analyses reveal that Panguiarchaeum is a clade of genome-reduced Asgard archaea within the Njordarchaeia

Abstract. The Asgard archaea are a diverse archaeal phylum important for our understanding of cellular evolution because they include the lineage that gave

academic.oup.com

Wen-Cong Huang@wentsunghwang.bsky.social · last yr.

#Asgard,#phylogeny 1/ 🧵 Does MAGs contamination affect the placement of Njord as suggested by Zhang et al, 2025? www.nature.com/articles/s41... Our updated analysis suggests instead... www.biorxiv.org/content/10.1...

Kassiani Panagiotou@kassipan.bsky.social · last yr.

Excited to share our work on WitChi! 🛠️🖥️ We tested it on the GTDB r220 archaeal supermatrix (5,869 taxa & 10,101 cols) removing 55% of sites in <2h. The phylogeny showed several interesting groupings with overall improved branch support: #phylogenetics #ArchaeaSky #MSA #opensource #MEvoSky #MicroSky

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Stephan Köstlbacher@stephkoe.bsky.social · last yr.

1. 🧵 New preprint out! WitChi: a fast, open-source Python tool to detect, quantify & prune compositional bias in MSAs. Lightweight, tree-free, scalable to 5k+ taxa... so we applied it to the GTDB archaea MSA. #ArchaeaSky #MEvoSky #MicroSky 🔗 doi.org/10.1101/2025... 💻 github.com/stephkoest/w...

Wen-Cong Huang@wentsunghwang.bsky.social · last yr.

#Asgard,#phylogeny 1/ 🧵 Does MAGs contamination affect the placement of Njord as suggested by Zhang et al, 2025? www.nature.com/articles/s41... Our updated analysis suggests instead... www.biorxiv.org/content/10.1...

Phylogenomic analyses reveal that Panguiarchaeum is a clade of genome-reduced Asgard archaea within the Njordarchaeia

The Asgard archaea are a diverse archaeal phylum important for our understanding of cellular evolution because they include the lineage that gave rise to eukaryotes. Recent phylogenomic work has focus...

biorxiv.org

Fabian van Beveren@fabianvanbeveren.bsky.social · last yr.

Excited to share our recent work on the evolution of ectomycorrhizal plants! 🌳 🧬 🖥️ doi.org/10.1111/nph.70054 With: Yvet Boele, @puginiercamille.bsky.social, @mbianc.bsky.social, Cyril Libourel, @maximebonhomme.bsky.social, @kellerjeanphd.bsky.social, @pierremarcdelaux.bsky.social A thread: (1/5)

Ectomycorrhizal symbiosis evolved independently and by convergent gene duplication in rosid lineages

Click on the article title to read more.

doi.org